I've been using this MEAL PREP SQUARE BOX SET X5 for a few weeks now and it's become my daily go-to. The stainless steel feels sturdy yet lightweight, and the leak proof airtight lid really keeps soups and sauces contained. I love that the lid lock vent means I can microwave with the lid on, which cuts down splattering and heat time. The semi-transparent lid makes it easy to see what's inside, and everything stacks neatly in my cupboard. Dishwasher-safe and the seals pop out for easy cleaning. Great for meal prep and taking lunch to work.